How can I test external ZBT RAM on MPS2 board?


I need more  RAM size on MSP2 board.

in Keil  uVison 5, I add a simple code to write then read testing.


ram_addr=(volatile uint32_t *)(0x20400000);

for (j=0; j<1024; j++)

for (j=0; j<1024; j++)
printf(" %x ", data);


According to datasheet, 0x20400000 is the start address of ZBT SRAM2/3. 

After write, I read random data, not sequential 1, 2, 3, ......  I wrote into SRAM.

Can you tell me what wrong with it?



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